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<ul>
    <li class="zhangsan">张三</li>
    <li>王五</li>
    <li class="lisi">李四</li>
    <li id="goudan">
        <span>狗蛋</span>
        <a title="我是狗蛋的儿子">我是狗蛋的儿子</a>
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    <a href="http://www.baidu.com" title="百度一下">百度一下</a>
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